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Airbridge BTS3606C CDMA Base Station Product Description 8 Signal Flows in the BTS Signal Flows in the BTS About This Chapter This topic describes the signal flows in the BTS. From the Abis interface to the Um interface, the signals in the BTS form signal flows during transmission. The signal flows in the BTS are the Abis traffic signal flow, Abis signaling signal flow, OM signal flow, and clock signal flow.
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Airbridge BTS3606C CDMA Base Station 8 Signal Flows in the BTS Product Description The physical links over the Abis interface are E1/T1/FE links. The physical links between baseband subracks are cell buses. The CCPMs/CECMs are connected to the STDM through SFP cables.
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Airbridge BTS3606C CDMA Base Station Product Description 8 Signal Flows in the BTS 8.1 Abis Traffic Signal Flow in the BTS This topic describes the Abis traffic signal flow in the BTS. The Abis traffic signals consist of voice service traffic signals, inband signaling signals, and data service traffic signals.
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Airbridge BTS3606C CDMA Base Station 8 Signal Flows in the BTS Product Description The ATM cells or IP packets from the BSC are sent to the BCIM, which reassembles them, uses its own main control unit to process them, and sends them to the CCPM or CECM through the cell bus.
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Airbridge BTS3606C CDMA Base Station Product Description 8 Signal Flows in the BTS Figure 8-2 OM signal flow in the BTS Antenna SDFU & Feeder CCPM BCKM SPAM CECM BCIM Antenna SDFU & Feeder CCPM SPAM CECM Telnet Clock Signal...
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Airbridge BTS3606C CDMA Base Station 8 Signal Flows in the BTS Product Description The satellite receiver of the BCKM receives 1 pulse per second (PPS) synchronization signals from GPS and GLONASS satellites through the satellite antenna. Then, the CLKM processes the 1PPS signals to generate 2S and 16Fc clock signals (19.6608 MHz) required by the CCPM or CECM and outputs 2S and 10 MHz signals for testing.